Use this procedure to create an array of identical railings along a stair, or as free-standing railings. 
- Select the railing to array. 
 
-  Click 

. 
  
- Select an edge from which to start the array that is perpendicular to the array axis, then drag in the direction of the array. Do one of the following: 
- Offset: start the railing array a specified offset distance from the edge. 
 
- Clear Distance: specify a clear distance between each arrayed railing. 
 
- Pick Array Distance: specify a distance between arrayed railings. 
 
- Enter Count: specify the number of railings to appear in the array. 
 
 Alternatively, you can press Enter and then specify two points between which to array the railing.